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Old 20-11-2012, 07:51 AM
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Geoff45 (Geoff)
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Geoff45 is offline
 
Join Date: Jul 2006
Location: Sydney
Posts: 2,407
Hi Peter
Two possibilities that I can think of:
The spikes could be artifacts from the microlens layer on the front of
the camera sensor. Standard sensors have these lenses to increase quantum
efficiency. I know this has been discussed on the QSI Yahoo forum.

The other (vague) possibility is pinched optics, where the screws holding the refractor cell are too tight.
Geoff
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